By far the most common question in optometry is to explain the three different types of refractive error, nearsightedness (myopia), farsightedness (hyperopia), and astigmatism.  This video will help demonstrate the physiology that causes blurry vision, all of which can easily be corrected by prescription glasses, contact lenses or LASIK.  If you have further questions, don't hesitate to email our optometrists or opticians.